Dry pipe-valve for fire-extinguishing systems.



A. G; ROWLEY.

DRY PIPE VALVE FOR FIRE EXTINGUISHING SYSTEM APPLICATION FILED APR.26, 1913.

Patented Aug. 18, 1914,

2 SHEETS-SHEET 1.

INVENTOI? FIG.

W/T/VESSE'S:

ATTORNEY.

ARTHUR C; ROWLEY, 0F PHILADELPHIA, 1'

AUTOMATIC SPRINKLER COMPANY, PORATION OF DELAWARE.

ENNsYLvanIa, AssIoNon TO ASSOCIATED or PHILADELPHIA, PENNSYLVANIA, a con- DRY PIPE-VALVE FOR FIBE-EITINGUISHING SYSTEMS.

Specification of Letters Patent.

Patented Aug. 18, 1914,

Application aim April as, 1913. Serial No. 163,744.

of the working parts are entirely closed in the valve chamber thus preventing any tampering with the valve either maliciously or carelessly and also preventing any possibility of interference wit-h the operation of the valve when once set up ready for service; to provide an ample passage for water; to reduce the number of parts to a minimum; to provide for ease of repairing and accessibility for the renewal of parts, and to enable the working parts to be made and assembled prior to their introduction into the valve casing. v

The invention will be claimed at the end hereof, but will first be described in connection with the embodiment of it chosen from among other embodiments for illustration in the accompanying drawings, in which Figure 1, is a side view partly in section of a valve embodying features of the invention. Fig. 2, is a side view, partly in section, illustrating the principal working parts which are assembled as a unit without the casing, and Fig. 3, is a sectional view,

taken on the line 33 of Fig. 2.

In the drawings 1 is the air chamber section of the casing'and it is adapted for connection to the sprinkler systenufor example, by means of the flanged portion 2.

3 is a drain opening and 4 is a clapper receptacle. 5, is the lower chamber section of the casing and it is adapted for connection to the water supply as by means of a flanged connection 6.

7, Figs. 2 and 8, is an interior removable terial. Air and releasing clappers 10 and 11 are pivotally connected with the frame 7 and appropriately arranged for coiiperation with the seats. The space in the clapper receptacle 4 accommodates the clapper 10, when opened. The clamp 12 with its. adjustin screw 13, the hook 14, the operating lever 1% with its counter-weight 16, the tumbler 17, the strut 18 and the Water clapper 22, are appropriately connected with the frame 7 and may be assembled thereon prior to the inclusion of the frame in the casing. One side of the frame consists of two bars 19 and 20 and the other side consists of a bar 21 bowed to accommodate the water clapper 22. 23 and 24 are end flanges on the frame.

The flange 23 is fitted to a seat in the part 5- 0f the casing and the flange 24 carries the valve seat 8 and is clamped between the two parts of the casing. It being understood that the parts connected wit-h the frame are permitted to assume the positions that they occupy when the part 11 is released, so that they all fall within the flanges 28 and 24. The parts 1 and 5 of the casing are disoon nected and the frame is inserted from the top. Thereafter the parts connected with the frame may be positioned as shown in Fig. 2, by opening the door that will be hereinafter described. The parts 12 and 22 are pivoted at 52. The hook is bifurcated at its lower end formin two branches 25 and 26 pivoted to the knife edge 27. Between these branches 25 and 26 is the hook proper 28 which detachably engages the free end of the bar 12. The operating lever is pivoted at 29 intermediate of its ends between the bars 19 and 20 and is provided at one end with counter-weights 16. The outer end of the operating lever is bifurcated, forming branches 30 and 31 and between these branches and on the opposing inner faces of them are seats 32 which detachably receive a pin 33 on the hook 14. The tumbler 17 is pivoted to a knife edge 34 between the bars19 and 20 and detaohably engages the inner end of the operating lever. The strut 18' is movably connected by means of a pin 35, movable 1n slot-s 86 in brackets 37 on the arms 19 and 20.

38 is a handle pivoted to the door 39 and adapted to pass under a hooklike catch 40, so as to permit of fastening and unfastening the door. The handle 38 is pivoted in the door and has pins or projections 41 on its inner face wlnch take into cavities in the plug of the valve 42. The valve 42 is interposed in a channel 43 formed in the door phragm and connected with it is a contact 48 which, when the diaphragm is elevated, closes a circuit, not shown, at thecontaet 49;

thus giving a signal or alarm. The seat 50 for the water clapper 22 is arranged at the base of the section 5. y

Evidently the various working parts may be assembled on the frame 7 and the latter with the assembled parts, put inside of the casing, by separating the parts 1 and 5 thereof, putting the frame in through the top of the part 5 and then putting on'the part 1, so that the flange 24 is clamped be tween the two parts 1 and 5 when they are secured together by bolts or the like, which are not shown. course, the opening 51.

Assuming that the parts are in the posiy tion shown, the air pressure 1n the casing restrains the weight 16 and the water clap per 22 is held closed to the degree of tightness determined by the set-screw 13. If the air pressure goes off, for example, by rea son of a fire, the releasing clapper in the absence of the air pressure is free to open, and in doing so releases the Strut 18 permitting it to rise and free the tumbler'l'l,

which frees the operating lever 15 permit ting it to fall under the influence of the weight 16. Thus the pin and its seat, 33 and 32 are detached, the hook 14 turnstoward the right releasing the clamp 12 and so permitting the water clapper to open u der the pressure of the water whichfreely flows through the valve to the extinguisher system. Water, under these circumstances,

flows past the check valve 47 and actuates the alarm by closing the contacts 48 and 49 in the manner described. Afterthe water has been shut 0% by a valve, not showmapn the water inlet side of thevalve, the parts are reset. For this purpose the handle 38 is from under the hook-like catch'4O turned 11 anclthe c 001'. 39 may be opened.- If the door should thereafter, or at-any time be, left open and the water turned on to the valve,

an alarm would be sounded because when the handle 38 was turned it turned the plug of the valve 42 thus opening the water Way It will be understood, of that in use a plate is appliedtocover 43 to the alarm device. The plug of the valve 42 is only closed when the handle has been turned under the hook 40. v

It will be'obvious; to those skilled in the art to which my invention relates that modifications may be made in details without departing from the spirit thereof, hence I do not limit myself as to details or many way further than theprior state of the art may require, but

\Vhat I claim is: e v 1. A dry pipe valvelcomp'rising the com jbination of an air cliambersection"adapted for connection to the sprinkler system, a lower chamber section adaptedifor connec ;tion to thewater supply and to the first mentioned. section, an, interior removable .fr'ame, havinga flange clampedlbetween said'sec'tio'ns' and provided with air and releasing seats, air releasing and water clappers and a clamp provided with an adjustable mechanism interposed betweenthe re- 1 2. In a dry pipe valve [the combination of a removable frameflhaving a flange, a water clapper clampand its adjusting screw piv- {otally connected with the frame, andfla hook and weighted operating lever and tumbler and strut interposed between the releasing. lclapper and clam'p'jand 'fres'pectively con nected with the frame and" collectively con- 1 stituting operating mechanism, "and: a hous-f one is'seated in. one part fof the casing' a'nd the other is clamped between'the two-parts of the casing, and operating mechanism including water and release clappei's and their interconnecting mechanism carried by the fraune, said frame and its connected parts insertable and removable through the open- ;ing in onefof the partsjthat isopened and closed by the other of the parts.

. 44 h el y Pi v a casing consisting of two parts detachably fconnected together, aframe that can pass through the openingin one of the parts that isjcovered'by the other'of the parts soas to be mounted in the casing, and a part of said. frame clamped between the two 7 parts, and release" and'water clappers and, their frame and inclosed in the easing.

natwo-part casing, a'removable frame coming screw all pivotedto the frame, and suitleasing clapper 'theclanip andco'nne'cted with the frame, substantially asgdescribed ,oted to then-amt, a releasing clapper ,p'iving consisting of two detachablyconnected parts between which the'fiange' is clamped,

hefcZmbinaeqn ofatwo-part 'casing,'a removable frame. provided at its ends with flanges whereof pc valve the combination of 5. Tu a drypipevalvethe combination of complementary mechanism carried by the prising aside piececonsisting others and a bowed side piece and end flanges, a clamp and water clapper pivoted to the frame and adapted to pass through the bowed part thereof, a release clapper, and mechanism carried between" e arms of the side of the frame and interposed between the clapper and clamp and said frame adapted to be inserted through one of said two parts and to have a part of it engaged or clamped between said two parts, substantially as de- 10 scribed.

In testimony whereof I have hereunto signed my name in the presence of two witnesses.

ARTHUR C. ROWLEY;

Witnesses:

CIJFFORD K. OAssEL, FRANK E. FRENCH. 

